(7) Iris
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	6 May 2026	10.5	2.643 AU	2.162 AU	10h08m	+04°17'	107.2°	21.4°
Opposition	25 May 2027	9.5	2.890 AU	1.878 AU	16h05m	-23°11'	177.7°	0.8°

The interactive orbit chart above shows the body's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)

The orbital elements of Iris are:

            e (Eccentricity)                : 0.2302133
            a (Semimajor axis)              : 2.3865290
            i (Inclination)                 : 5.51882
            Ω (Longitude of ascending node) : 259.49459
            ω (Argument of perihelion)      : 145.48205
            M (Mean anomaly)                : 61.72501
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 225.10083
            B (Latitude of perihelion)      : 3.12403
            P (Orbital period in years)     : 3.69            
        

The light curve chart below shows the estimated development of the minor planet's magnitude.

The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.

The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-05-06 00:00 UT   10 08 08.5   +04 17 57     2.162    2.643  107.2   21.4   109   10.5 
2026-05-06 11:51 UT   10 08 23.8   +04 17 50     2.169    2.644  106.8   21.4   109   10.5 
2026-05-07 00:00 UT   10 08 39.7   +04 17 41     2.176    2.645  106.4   21.5   109   10.6 
2026-05-08 00:00 UT   10 09 12.0   +04 17 17     2.191    2.647  105.6   21.6   109   10.6 
2026-05-09 00:00 UT   10 09 45.5   +04 16 45     2.205    2.649  104.7   21.6   109   10.6 
2026-05-10 00:00 UT   10 10 20.1   +04 16 06     2.220    2.651  103.9   21.7   109   10.6 
2026-05-11 00:00 UT   10 10 55.8   +04 15 19     2.235    2.653  103.1   21.8   109   10.6 
2026-05-12 00:00 UT   10 11 32.6   +04 14 25     2.249    2.655  102.3   21.8   109   10.6 
2026-05-13 00:00 UT   10 12 10.4   +04 13 23     2.264    2.657  101.5   21.9   110   10.7 
2026-05-14 00:00 UT   10 12 49.3   +04 12 13     2.279    2.659  100.7   21.9   110   10.7 
2026-05-15 00:00 UT   10 13 29.1   +04 10 57     2.294    2.661   99.9   22.0   110   10.7 
2026-05-16 00:00 UT   10 14 10.1   +04 09 32     2.309    2.663   99.1   22.0   110   10.7 
2026-05-17 00:00 UT   10 14 51.9   +04 08 01     2.324    2.665   98.3   22.1   110   10.7 
2026-05-18 00:00 UT   10 15 34.8   +04 06 22     2.338    2.667   97.5   22.1   110   10.7 
2026-05-19 00:00 UT   10 16 18.6   +04 04 36     2.353    2.669   96.8   22.1   110   10.8 
2026-05-20 00:00 UT   10 17 03.4   +04 02 43     2.368    2.671   96.0   22.1   110   10.8 
2026-05-21 00:00 UT   10 17 49.0   +04 00 43     2.383    2.673   95.2   22.2   111   10.8 
2026-05-22 00:00 UT   10 18 35.6   +03 58 36     2.398    2.675   94.4   22.2   111   10.8 
2026-05-23 00:00 UT   10 19 23.0   +03 56 22     2.413    2.676   93.7   22.2   111   10.8 
2026-05-24 00:00 UT   10 20 11.3   +03 54 01     2.428    2.678   92.9   22.2   111   10.8 
2026-05-25 00:00 UT   10 21 00.5   +03 51 34     2.443    2.680   92.2   22.2   111   10.9 
2026-05-26 00:00 UT   10 21 50.4   +03 48 60     2.458    2.682   91.4   22.2   111   10.9 
2026-05-27 00:00 UT   10 22 41.2   +03 46 19     2.473    2.684   90.7   22.2   111   10.9 
2026-05-28 00:00 UT   10 23 32.7   +03 43 32     2.488    2.686   90.0   22.2   111   10.9 
2026-05-29 00:00 UT   10 24 25.0   +03 40 39     2.503    2.688   89.2   22.1   112   10.9 
2026-05-30 00:00 UT   10 25 18.1   +03 37 39     2.518    2.690   88.5   22.1   112   10.9 
2026-05-31 00:00 UT   10 26 11.9   +03 34 33     2.533    2.692   87.8   22.1   112   10.9 
2026-06-01 00:00 UT   10 27 06.4   +03 31 22     2.548    2.694   87.0   22.1   112   11.0 
2026-06-02 00:00 UT   10 28 01.6   +03 28 04     2.563    2.696   86.3   22.1   112   11.0 
2026-06-03 00:00 UT   10 28 57.5   +03 24 40     2.578    2.697   85.6   22.0   112   11.0 
2026-06-04 00:00 UT   10 29 54.1   +03 21 10     2.593    2.699   84.9   22.0   112   11.0 
2026-06-05 00:00 UT   10 30 51.4   +03 17 34     2.608    2.701   84.2   21.9   112   11.0 

    Terminology:
            
    delta:  distance between minor planet and earth in AU
    radius: distance between minor planet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-minor planet)    
    phase:  phase angle in degrees (angle sun-minor planet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    

Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.